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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

68°F

20°C

Humidity 93%
Wind Speed NE 5 mph
Barometer 29.67 in (1004.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 30 Jul 6:56 am EDT
Extended Forecast for

Nesconset NY

  • Today

    Today: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 76. North wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Light northwest wind.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83. Light and variable wind becoming northwest around 5 mph in the morning.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. South wind 3 to 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 84. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 84 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 82.

    High: 82 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 84.

    High: 84 °F

    Chance
    Showers

Detailed Forecast

Today
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 76. North wind 5 to 10 mph. Chance of precipitation is 60%.
Tonight
Partly cloudy, with a low around 63. Light northwest wind.
Friday
Sunny, with a high near 83. Light and variable wind becoming northwest around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 67. South wind 3 to 5 mph.
Saturday
Partly sunny, with a high near 84. Calm wind becoming south 5 to 8 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 69.
Sunday
Mostly cloudy, with a high near 82.
Sunday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 84.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nesconset NY
 40.86°N 73.16°W (Elev. 98 ft)
Last Update:
2:24 am EDT Jul 30, 2026
Forecast Valid:
7am EDT Jul 30, 2026-6pm EDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation